hive连接mysql配置

1、进入hive/conf目录下，修改hive-default.xml: @baidu, I 修改的是 hive-site.xml

<property>

<name>hive.metastore.local</name>

<value>true</value>

</property>

<property>

<name>javax.jdo.option.ConnectionURL</name>

<value>jdbc:mysql://192.168.0.121:3307/hive?createDatabaseIfNotExist=true</value>

</property>

<property>

<name>javax.jdo.option.ConnectionDriverName</name>

<value>com.mysql.jdbc.Driver</value>

<description>Driver class name for a JDBC metastore</description>

</property>

<property>

<name>javax.jdo.option.ConnectionUserName</name>

<value>root</value>

<description>username to use against metastore database</description>

</property>

<property>

<name>javax.jdo.option.ConnectionPassword</name>

<value>root</value>

<description>password to use against metastore database</description>

</property>

<property>

<name>hive.metastore.warehouse.dir</name>

<value>/home/hadoop/hive/warehouse</value>

<description>location of default database for the warehouse</description>

</property>

然后启动 bin/hive，执行show tables命令 这时报FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException: Access denied for user 'root'@'fuyanqing.feinno.com' (using
password: YES)。这是因为mysql不允许远程访问的问题，执行 grant all on *.* to 'root'@'%' identified by 'root';

然后再执行show tables命令，这时报：FAILED: Error in metadata: javax.jdo.JDODataStoreException: An exception was thrown while adding/validating class(es) : Specified key was
too long; max key length is 767 bytes。

这个问题是因为hive对mysql的UTF-8编码方式有限制，修改一下mysql的编码方式即可：alter database name character set latin1;